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Cornerstone · Grades 3–5 Keystones #1 23 July 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄4

    Answer: 25⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 187 in the ratio 4:3:4

    Answer: 68, 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 7, 14, 42, 25, 44, 31. Give your answer to 2 decimal places

    Answer: 27.17

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